HobbyStar T-Plug/Deans Series Connector, No-Wires High-quality HobbyStar connector for connecting two batteries with Deans style connectors in series. With two batteries connected in series you will have double the voltage and power of a single battery, but with the same run time as one battery. Double the voltage and power of a single battery, but with the same run time as one. Compact "No-Wires" design